<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>parallel resistance</title>
</head>
<body>
<h3>两电阻并联阻值计算</h3>
<form action="" method="post">
    R1：
    {{ form.first }}Ω
    <br>
    R2：
    {{ form.second }}Ω
    <br>
    {{ form.submit }}
    <br>
    并联电阻值为：{{ form.result.data }}Ω
</form>
</body>
</html>